Publisher: Cambridge University Press   (Total: 386 journals)

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Showing 201 - 386 of 386 Journals sorted alphabetically
J. of Child Language     Hybrid Journal   (Followers: 30, SJR: 1.035, CiteScore: 2)
J. of Chinese History / 中國歷史學刊     Hybrid Journal  
J. of Classics Teaching     Open Access  
J. of Clinical and Translational Science     Open Access  
J. of Dairy Research     Full-text available via subscription   (Followers: 8, SJR: 0.573, CiteScore: 1)
J. of Demographic Economics     Hybrid Journal   (Followers: 3, SJR: 1.227, CiteScore: 1)
J. of Developmental Origins of Health and Disease     Hybrid Journal   (Followers: 2, SJR: 0.843, CiteScore: 2)
J. of Diagnostic Radiography and Imaging     Hybrid Journal   (Followers: 4)
J. of East Asian Studies     Full-text available via subscription   (Followers: 16, SJR: 0.59, CiteScore: 1)
J. of Ecclesiastical History     Hybrid Journal   (Followers: 19, SJR: 0.138, CiteScore: 0)
J. of Economic History     Full-text available via subscription   (Followers: 46, SJR: 1.82, CiteScore: 2)
J. of Experimental Political Science     Full-text available via subscription   (Followers: 6, SJR: 2.526, CiteScore: 2)
J. of Financial and Quantitative Analysis     Full-text available via subscription   (Followers: 48, SJR: 3.636, CiteScore: 2)
J. of Fluid Mechanics     Hybrid Journal   (Followers: 184, SJR: 1.591, CiteScore: 3)
J. of French Language Studies     Hybrid Journal   (Followers: 5, SJR: 0.163, CiteScore: 0)
J. of Functional Programming     Hybrid Journal   (Followers: 1, SJR: 0.458, CiteScore: 1)
J. of Germanic Linguistics     Full-text available via subscription   (Followers: 8, SJR: 0.157, CiteScore: 0)
J. of Global History     Full-text available via subscription   (Followers: 29, SJR: 0.34, CiteScore: 1)
J. of Hellenic Studies     Full-text available via subscription   (Followers: 19, SJR: 0.146, CiteScore: 0)
J. of Helminthology     Hybrid Journal   (Followers: 2, SJR: 0.553, CiteScore: 1)
J. of Hospitality and Tourism Management     Full-text available via subscription   (Followers: 14, SJR: 0.949, CiteScore: 2)
J. of Institutional Economics     Hybrid Journal   (Followers: 15, SJR: 0.978, CiteScore: 2)
J. of K-Theory     Full-text available via subscription  
J. of Laryngology & Otology     Hybrid Journal   (Followers: 21, SJR: 0.495, CiteScore: 1)
J. of Latin American Studies     Hybrid Journal   (Followers: 33, SJR: 0.34, CiteScore: 1)
J. of Law and Religion     Full-text available via subscription   (Followers: 9, SJR: 0.115, CiteScore: 0)
J. of Linguistic Geography     Full-text available via subscription   (Followers: 1)
J. of Linguistics     Hybrid Journal   (Followers: 18, SJR: 0.451, CiteScore: 1)
J. of Management & Organization     Full-text available via subscription   (Followers: 353, SJR: 0.543, CiteScore: 1)
J. of Mechanics     Hybrid Journal   (Followers: 21, SJR: 0.303, CiteScore: 1)
J. of Modern African Studies     Hybrid Journal   (Followers: 20, SJR: 0.606, CiteScore: 1)
J. of Navigation     Hybrid Journal   (Followers: 249, SJR: 0.493, CiteScore: 2)
J. of Nutritional Science     Open Access   (Followers: 3, SJR: 0.984, CiteScore: 2)
J. of Pacific Rim Psychology     Hybrid Journal   (Followers: 1, SJR: 0.33, CiteScore: 1)
J. of Paleontology     Hybrid Journal   (Followers: 11, SJR: 0.882, CiteScore: 2)
J. of Pension Economics & Finance     Hybrid Journal   (Followers: 7, SJR: 0.931, CiteScore: 1)
J. of Plasma Physics     Hybrid Journal   (Followers: 22, SJR: 0.441, CiteScore: 1)
J. of Psychiatric Intensive Care     Hybrid Journal   (Followers: 8)
J. of Psychologists and Counsellors in Schools     Full-text available via subscription   (Followers: 8, SJR: 0, CiteScore: 1)
J. of Public Policy     Hybrid Journal   (Followers: 27, SJR: 0.542, CiteScore: 1)
J. of Race, Ethnicity, and Politics     Full-text available via subscription   (Followers: 4)
J. of Radiotherapy in Practice     Hybrid Journal   (Followers: 7, SJR: 0.16, CiteScore: 0)
J. of Relationships Research     Hybrid Journal   (Followers: 5, SJR: 0.294, CiteScore: 0)
J. of Roman Archaeology     Hybrid Journal   (Followers: 22, SJR: 0.341, CiteScore: 1)
J. of Roman Studies     Full-text available via subscription   (Followers: 22, SJR: 0.182, CiteScore: 0)
J. of Smoking Cessation     Hybrid Journal   (Followers: 6, SJR: 0.411, CiteScore: 0)
J. of Social Policy     Hybrid Journal   (Followers: 41, SJR: 1.063, CiteScore: 2)
J. of Southeast Asian Studies     Full-text available via subscription   (Followers: 12, SJR: 0.14, CiteScore: 0)
J. of Symbolic Logic     Hybrid Journal   (Followers: 1, SJR: 1.057, CiteScore: 1)
J. of the American Philosophical Association     Hybrid Journal   (SJR: 0.857, CiteScore: 1)
J. of the Australian Mathematical Society     Full-text available via subscription   (SJR: 0.46, CiteScore: 1)
J. of the Gilded Age and Progressive Era     Full-text available via subscription   (Followers: 8, SJR: 0.192, CiteScore: 0)
J. of the History of Economic Thought     Full-text available via subscription   (Followers: 14, SJR: 0.784, CiteScore: 1)
J. of the Institute of Mathematics of Jussieu     Hybrid Journal   (SJR: 2.393, CiteScore: 1)
J. of the Intl. Neuropsychological Society     Hybrid Journal   (Followers: 14, SJR: 1.408, CiteScore: 3)
J. of the Intl. Phonetic Association     Full-text available via subscription   (Followers: 2, SJR: 0.27, CiteScore: 1)
J. of the Marine Biological Association of the UK     Hybrid Journal   (Followers: 23, SJR: 0.548, CiteScore: 1)
J. of the Royal Asiatic Society     Hybrid Journal   (Followers: 14, SJR: 0.121, CiteScore: 0)
J. of the Society for American Music     Hybrid Journal   (Followers: 10, SJR: 0.199, CiteScore: 0)
J. of Tropical Ecology     Hybrid Journal   (Followers: 15, SJR: 0.626, CiteScore: 1)
J. of Tropical Psychology     Hybrid Journal   (Followers: 1)
J. of Wine Economics     Full-text available via subscription   (Followers: 5)
Japanese J. of Political Science     Hybrid Journal   (Followers: 7, SJR: 0.372, CiteScore: 1)
Kantian Review     Full-text available via subscription   (Followers: 3)
Knowledge Engineering Review     Hybrid Journal   (Followers: 2, SJR: 0.357, CiteScore: 2)
Language and Cognition     Hybrid Journal   (Followers: 22)
Language in Society     Hybrid Journal   (Followers: 22, SJR: 1.466, CiteScore: 2)
Language Teaching     Hybrid Journal   (Followers: 32, SJR: 1.233, CiteScore: 2)
Language Variation and Change     Hybrid Journal   (Followers: 9, SJR: 0.854, CiteScore: 1)
Laser and Particle Beams     Hybrid Journal   (Followers: 1, SJR: 0.497, CiteScore: 1)
Law and History Review     Full-text available via subscription   (Followers: 15, SJR: 0.184, CiteScore: 0)
Legal Information Management     Hybrid Journal   (Followers: 10)
Legal Theory     Hybrid Journal   (Followers: 13, SJR: 0.484, CiteScore: 1)
Leiden J. of Intl. Law     Hybrid Journal   (Followers: 38, SJR: 0.482, CiteScore: 0)
Libyan Studies     Hybrid Journal   (Followers: 1, SJR: 0.111, CiteScore: 0)
LMS J. of Computation and Mathematics     Free   (SJR: 0.229, CiteScore: 1)
Macroeconomic Dynamics     Hybrid Journal   (Followers: 25, SJR: 1.169, CiteScore: 1)
Management and Organization Review     Hybrid Journal   (Followers: 12, SJR: 0.816, CiteScore: 2)
Mathematical Proceedings of the Cambridge Philosophical Society     Full-text available via subscription   (Followers: 1, SJR: 1.086, CiteScore: 1)
Mathematical Structures in Computer Science     Hybrid Journal   (Followers: 3, SJR: 0.298, CiteScore: 1)
Medical History     Hybrid Journal   (Followers: 7, SJR: 0.417, CiteScore: 1)
Microscopy and Microanalysis     Full-text available via subscription   (Followers: 1, SJR: 0.292, CiteScore: 0)
Modern Asian Studies     Hybrid Journal   (Followers: 15, SJR: 0.397, CiteScore: 0)
Modern Intellectual History     Hybrid Journal   (Followers: 15, SJR: 0.218, CiteScore: 0)
MRS Communications     Hybrid Journal   (SJR: 1.443, CiteScore: 3)
MRS Energy & Sustainability - A Review J.     Full-text available via subscription  
Nagoya Mathematical J.     Hybrid Journal   (SJR: 0.892, CiteScore: 1)
Natural Language Engineering     Hybrid Journal   (Followers: 4, SJR: 0.264, CiteScore: 1)
Netherlands J. of Geosciences     Hybrid Journal   (SJR: 0.285, CiteScore: 1)
Netherlands Yearbook of Intl. Law     Full-text available via subscription   (Followers: 15, SJR: 0.196, CiteScore: 0)
Network Science     Hybrid Journal   (Followers: 5, SJR: 0.461, CiteScore: 1)
Neuron Glia Biology     Hybrid Journal  
New Perspectives on Turkey     Full-text available via subscription   (Followers: 3, SJR: 0.111, CiteScore: 0)
New Surveys in the Classics     Full-text available via subscription   (Followers: 3)
New Testament Studies     Hybrid Journal   (Followers: 33, SJR: 0.316, CiteScore: 0)
New Theatre Quarterly     Hybrid Journal   (Followers: 15, SJR: 0.132, CiteScore: 0)
Nineteenth-Century Music Review     Hybrid Journal   (Followers: 6, SJR: 0.1, CiteScore: 0)
Nordic J. of Linguistics     Hybrid Journal   (Followers: 8, SJR: 0.156, CiteScore: 0)
Numerical Mathematics : Theory, Methods and Applications     Full-text available via subscription  
Nurse Prescriber     Full-text available via subscription   (Followers: 5)
Nutrition Research Reviews     Hybrid Journal   (Followers: 13, SJR: 1.756, CiteScore: 5)
Organised Sound     Hybrid Journal   (Followers: 8, SJR: 0.271, CiteScore: 0)
Oryx     Hybrid Journal   (Followers: 19, SJR: 0.981, CiteScore: 2)
Paleobiology     Full-text available via subscription   (Followers: 6, SJR: 1.563, CiteScore: 3)
Palliative & Supportive Care     Hybrid Journal   (Followers: 33, SJR: 0.611, CiteScore: 1)
Papers of the British School at Rome     Full-text available via subscription   (Followers: 20, SJR: 0.13, CiteScore: 0)
Parasitology     Hybrid Journal   (Followers: 4, SJR: 1.194, CiteScore: 2)
Parasitology Open     Open Access  
Personality Neuroscience     Open Access  
Perspectives on Politics     Full-text available via subscription   (Followers: 40, SJR: 2.075, CiteScore: 2)
Philosophy     Full-text available via subscription   (Followers: 14, SJR: 0.331, CiteScore: 0)
Phonology     Hybrid Journal   (Followers: 9, SJR: 0.623, CiteScore: 1)
Plainsong and Medieval Music     Hybrid Journal   (Followers: 8, SJR: 0.114, CiteScore: 0)
Plant Genetic Resources     Hybrid Journal   (Followers: 3, SJR: 0.353, CiteScore: 1)
Polar Record     Hybrid Journal   (Followers: 2, SJR: 0.313, CiteScore: 1)
Political Science Research and Methods     Full-text available via subscription   (Followers: 22)
Politics & Gender     Full-text available via subscription   (Followers: 25, SJR: 0.861, CiteScore: 1)
Politics and Religion     Full-text available via subscription   (Followers: 9, SJR: 0.541, CiteScore: 1)
Popular Music     Hybrid Journal   (Followers: 20, SJR: 0.216, CiteScore: 0)
Powder Diffraction     Full-text available via subscription   (Followers: 1, SJR: 0.319, CiteScore: 1)
Prehospital and Disaster Medicine     Full-text available via subscription   (Followers: 9, SJR: 0.462, CiteScore: 1)
Primary Health Care Research & Development     Open Access   (Followers: 18, SJR: 0.52, CiteScore: 1)
Probability in the Engineering and Informational Sciences     Hybrid Journal   (Followers: 1, SJR: 0.406, CiteScore: 1)
Proceedings of the Edinburgh Mathematical Society     Hybrid Journal   (SJR: 0.695, CiteScore: 1)
Proceedings of the Intl. Astronomical Union     Full-text available via subscription   (Followers: 2, SJR: 0.117, CiteScore: 0)
Proceedings of the Nutrition Society     Hybrid Journal   (Followers: 8, SJR: 1.373, CiteScore: 4)
Proceedings of the Prehistoric Society     Hybrid Journal   (Followers: 9)
Proceedings of the Royal Society of Edinburgh Section A Mathematics     Full-text available via subscription   (SJR: 1.506, CiteScore: 1)
Progress in Neurotherapeutics and Neuropsychopharmacology     Full-text available via subscription  
PS: Political Science & Politics     Full-text available via subscription   (Followers: 38, SJR: 0.665, CiteScore: 1)
Psychological Medicine     Hybrid Journal   (Followers: 18, SJR: 3.274, CiteScore: 5)
Public Health Nutrition     Hybrid Journal   (Followers: 23, SJR: 1.122, CiteScore: 2)
Publications of the Astronomical Society of Australia     Hybrid Journal   (Followers: 2, SJR: 1.237, CiteScore: 2)
Quarterly Reviews of Biophysics     Hybrid Journal   (Followers: 3, SJR: 3.282, CiteScore: 6)
Quaternary Research     Full-text available via subscription   (Followers: 19, SJR: 1.216, CiteScore: 2)
Queensland Review     Full-text available via subscription   (SJR: 0.101, CiteScore: 0)
Radiocarbon     Hybrid Journal   (Followers: 9, SJR: 0.959, CiteScore: 2)
Ramus : Critical Studies in Greek and Roman Literature     Hybrid Journal   (Followers: 5, SJR: 0.201, CiteScore: 0)
ReCALL     Hybrid Journal   (Followers: 4, SJR: 2.813, CiteScore: 3)
Religious Studies     Hybrid Journal   (Followers: 12, SJR: 0.172, CiteScore: 0)
Renewable Agriculture and Food Systems     Hybrid Journal   (Followers: 15, SJR: 0.593, CiteScore: 2)
Review of Intl. Studies     Full-text available via subscription   (Followers: 27, SJR: 1.63, CiteScore: 2)
Review of Middle East Studies     Full-text available via subscription   (Followers: 10, SJR: 0.101, CiteScore: 0)
Review of Politics     Full-text available via subscription   (Followers: 4, SJR: 0.119, CiteScore: 0)
Review of Symbolic Logic     Full-text available via subscription   (Followers: 2, SJR: 1.049, CiteScore: 1)
Reviews in Clinical Gerontology     Hybrid Journal   (Followers: 5)
Revista de Historia Económica     Full-text available via subscription   (Followers: 1, SJR: 0.221, CiteScore: 0)
Revista Internacional de la Cruz Roja     Full-text available via subscription   (Followers: 2)
Robotica     Hybrid Journal   (Followers: 3, SJR: 0.375, CiteScore: 1)
Royal Institute of Philosophy Supplements     Full-text available via subscription   (Followers: 4)
Rural History     Hybrid Journal   (Followers: 14, SJR: 0.145, CiteScore: 0)
Science in Context     Hybrid Journal   (Followers: 3, SJR: 0.265, CiteScore: 0)
Scottish J. of Theology     Hybrid Journal   (Followers: 38, SJR: 0.177, CiteScore: 0)
Seed Science Research     Hybrid Journal   (Followers: 2, SJR: 0.95, CiteScore: 2)
Slavic Review     Hybrid Journal   (Followers: 8, SJR: 0.395, CiteScore: 1)
Social Philosophy and Policy     Full-text available via subscription   (Followers: 22, SJR: 0.253, CiteScore: 1)
Social Policy and Society     Hybrid Journal   (Followers: 185, SJR: 0.653, CiteScore: 1)
Social Science History     Full-text available via subscription   (Followers: 16, SJR: 0.2, CiteScore: 0)
Spanish J. of Psychology     Hybrid Journal  
Studies in American Political Development     Hybrid Journal   (Followers: 5, SJR: 0.204, CiteScore: 0)
Studies in Church History     Full-text available via subscription   (Followers: 1)
Studies in Second Language Acquisition     Hybrid Journal   (Followers: 39, SJR: 1.516, CiteScore: 2)
Tempo     Hybrid Journal   (Followers: 2, SJR: 0.151, CiteScore: 0)
Thalamus & Related Systems     Full-text available via subscription  
The Americas : A Quarterly Review of Latin American History     Full-text available via subscription   (Followers: 5, SJR: 0.305, CiteScore: 0)
The Lichenologist     Hybrid Journal   (Followers: 5, SJR: 1.113, CiteScore: 2)
The Mathematical Gazette     Full-text available via subscription   (Followers: 1)
Theatre Research Intl.     Full-text available via subscription   (Followers: 14, SJR: 0.204, CiteScore: 0)
Theatre Survey     Full-text available via subscription   (Followers: 11, SJR: 0.121, CiteScore: 0)
Theory and Practice of Logic Programming     Hybrid Journal   (Followers: 3, SJR: 0.524, CiteScore: 2)
Think     Full-text available via subscription   (Followers: 6)
TRaNS : Trans-Regional-and-National Studies of Southeast Asia     Full-text available via subscription   (Followers: 6, SJR: 0.192, CiteScore: 0)
Transactions of the Royal Historical Society     Hybrid Journal   (Followers: 15, SJR: 0.419, CiteScore: 0)
Transnational Environmental Law     Hybrid Journal   (Followers: 5, SJR: 0.498, CiteScore: 1)
Twentieth-century music     Hybrid Journal   (Followers: 4, SJR: 0.453, CiteScore: 1)
Twin Research and Human Genetics     Full-text available via subscription   (SJR: 0.72, CiteScore: 1)
Urban History     Hybrid Journal   (Followers: 18, SJR: 0.358, CiteScore: 0)
Utilitas     Hybrid Journal   (Followers: 7, SJR: 0.712, CiteScore: 0)
Victorian Literature and Culture     Hybrid Journal   (Followers: 21, SJR: 0.163, CiteScore: 0)
Visual Neuroscience     Hybrid Journal   (Followers: 7, SJR: 1.012, CiteScore: 2)
Wireless Power Transfer     Full-text available via subscription   (Followers: 4)
World Politics     Hybrid Journal   (Followers: 211, SJR: 6.544, CiteScore: 4)
World Trade Review     Full-text available via subscription   (Followers: 16, SJR: 0.591, CiteScore: 1)
World's Poultry Science J.     Full-text available via subscription   (Followers: 5, SJR: 0.559, CiteScore: 1)
Yearbook of Intl. Humanitarian Law     Full-text available via subscription   (Followers: 7, SJR: 0.107, CiteScore: 0)
Zygote     Hybrid Journal   (Followers: 1, SJR: 0.387, CiteScore: 1)

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Similar Journals
Journal Cover
Radiocarbon
Journal Prestige (SJR): 0.959
Citation Impact (citeScore): 2
Number of Followers: 9  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 00338222 - ISSN (Online) 19455755
Published by Cambridge University Press Homepage  [386 journals]
  • RDC volume 62 issue 1 Cover and Front matter
    • Pages: 1 - 4
      PubDate: 2020-01-30
      DOI: 10.1017/RDC.2020.1
       
  • RDC volume 62 issue 1 Cover and Back matter
    • Pages: 1 - 2
      PubDate: 2020-01-30
      DOI: 10.1017/RDC.2020.2
       
  • Using Carbon Isotopes to Fight the Rise in Fraudulent Whisky
    • Authors: Cook; Gordon T, Dunbar, Elaine, Tripney, Brian G, Fabel, Derek
      Pages: 51 - 62
      Abstract: A major threat to the Scotch whisky industry is the sale of counterfeit single malt whiskies with purported distillation years in the 19th and early- to mid-20th centuries. However, these are often much more recent spirits, distilled in the latter part of the 20th or first part of the 21st centuries. These sales impinge upon the reputation of auction houses, retailers, brand owners and distillers. The atmospheric testing of nuclear weapons in the 1950s and early 1960s has enabled a precise calibration curve to be created, however, there are several reasons why this may not be appropriate for establishing the year of whisky distillation. We have created a 14C calibration curve derived from known-age, single malt whiskies for the period 1950–2015 that enables whisky distilled during the period from 1955 onwards to have the distillation year determined to within 1–3 years for certain periods. However, because of the shape of the curve, two possible age ranges are often possible. The correct range can often be determined from a further plot of δ13C values against distillation year, which shows a trend of decreasing values through time. Several examples are given of the determination of both genuine and fake products.
      PubDate: 2020-01-08
      DOI: 10.1017/RDC.2019.153
       
  • Luminescence Dating of the Iron Age Deposits from Tell Damiyah in the
           Jordan Valley
    • Authors: al Khasawneh; Sahar, Murray, Andrew, Kafafi, Zeidan, Petit, Lucas
      Pages: 1 - 12
      Abstract: In this study, we investigate quartz-based luminescence optical dating of Iron Age deposits at the archaeological site of Tell Damiyah in the Jordan valley. Ten samples, taken from different occupation layers from two different excavation areas, proved to have good luminescence characteristics (fast-component dominated, dose recovery ratio 1.032 ± 0.010, n=24). The optical ages are completely consistent with both available 14C ages and ages based on stylistic elements; it appears that this material was fully reset at deposition, although it is recognised that the agreement with age control is somewhat dependent on the assumed field water content of the samples. Further comparison with different OSL signals from feldspar, or investigations based on dose distributions from individual grains would be desirable to independently confirm the resetting of this material. It is concluded that the sediments of Tell Damiyah are very suitable for luminescence dating. Despite the relatively large associated age uncertainties of between 5 and 10%, OSL at tell sites has the potential to provide ages for material very difficult to date by conventional methods, and to identify reworked mixtures of older artifacts in a younger depositional setting.
      PubDate: 2019-08-06
      DOI: 10.1017/RDC.2019.90
       
  • High Precision 14C Analysis in Small Seawater Samples
    • Authors: Casacuberta; Núria, Castrillejo, Maxi, Wefing, Anne-Marie, Bollhalder, Silvia, Wacker, Lukas
      Pages: 13 - 24
      Abstract: A new method to extract CO2 in seawater samples for the determination of F14C has been developed in the Laboratory of Ion Beam Physics at ETH Zurich. The setup consists of an automated sampler designed to extract dissolved inorganic carbon (DIC) from 7 samples in a row, by flushing the seawater with He gas to extract CO2. The fully automated method is controlled via a LabVIEW program that runs through all consecutive steps: catalyst preconditioning, CO2 extraction, CO2 trapping, thermal CO2 release from the trap into the reactor and finally the graphitization reaction which is performed simultaneously in the 7 reactors. The method was optimized by introducing a Cu-Ag furnace that was placed between the water and zeolite traps, which resulted in a better and faster graphitization performance (
      PubDate: 2019-08-19
      DOI: 10.1017/RDC.2019.87
       
  • The End of the “Green Oasis”: Chronological Bayesian Modeling of Human
           and Environmental Dynamics in the Bahariya Area (Egyptian Sahara) from
           Pharaonic Third Intermediate Period to Medieval Times
    • Authors: Colin; Frédéric, Quiles, Anita, Schuster, Mathieu, Schwartz, Dominique, Duvette, Catherine, Marchand, Sylvie, El Dorry, Mennat-Allah, van Heesch, Johan
      Pages: 25 - 49
      Abstract: After the sharp transition to aridity that followed the “Green Sahara” episode 5500 years ago, human settlements took refuge in Egyptian oases, which have to varying extents been “Green Oases” for centuries. In that period, synchronous with the beginning of historical times, the desert’s aridity is generally regarded as broadly comparable to the current period. Natural and anthropogenic deposits studied during 13 excavation campaigns in Bahariya Oasis (Egyptian Desert) suggest that a fairly clear transition from a relatively green environment to much more arid landscapes occurred in the first millennia BCE and CE. This article aims at establishing the chronology of human occupations and environmental change within this period, by combining archaeological and radiocarbon data, using Bayesian modeling. It reveals that the drying up of the environment experienced by desert farmers occurred at some point between the reigns of Antoninus Pius and Caracalla (2nd–3rd century CE). The accuracy of the produced chronological models made it possible to highlight synchronisms between the end of this “Green Oasis” phase and comparable aridification phenomena on regional and interregional scales. Similar degradation processes on remote sites inside the Roman Empire might be explained by globalized anthropogenic agencies overlapping with a broader climatic drying.
      PubDate: 2019-09-16
      DOI: 10.1017/RDC.2019.106
       
  • Radiocarbon Dating at Groningen: New and Updated Chemical Pretreatment
           Procedures
    • Authors: Dee; M W, Palstra, S W L, Aerts-Bijma, A Th, Bleeker, M O, de Bruijn, S, Ghebru, F, Jansen, H G, Kuitems, M, Paul, D, Richie, R R, Spriensma, J J, Scifo, A, van Zonneveld, D, Verstappen-Dumoulin, B M A A, Wietzes-Land, P, Meijer, H A J
      Pages: 63 - 74
      Abstract: The Centre for Isotope Research (CIO) at the University of Groningen has operated a radiocarbon (14C) dating laboratory for almost 70 years. In 2017, the CIO received a major upgrade, which involved the relocation of the laboratory to new purpose-built premises, and the installation of a MICADAS accelerator mass spectrometer. This period of transition provides an opportunity to update the laboratory’s routine procedures. This article addresses all of the processes and quality checks the CIO has in place for registering, tracking and pretreating samples for radiocarbon dating. Complementary updates relating to radioisotope measurement and uncertainty propagation will be provided in other forthcoming publications. Here, the intention is to relay all the practical information regarding the chemical preparation of samples, and to provide a concise explanation as to why each step is deemed necessary.
      PubDate: 2019-09-09
      DOI: 10.1017/RDC.2019.101
       
  • New Radiocarbon Dates Show Early Neolithic Date of Flint-Mining and Stone
           Quarrying in Britain
    • Authors: Edinborough; Kevan, Shennan, Stephen, Teather, Anne, Baczkowski, Jon, Bevan, Andrew, Bradley, Richard, Cook, Gordon, Kerig, Tim, Parker Pearson, Mike, Pope, Alexander, Schauer, Peter
      Pages: 75 - 105
      Abstract: New radiocarbon (14C) dates suggest a simultaneous appearance of two technologically and geographically distinct axe production practices in Neolithic Britain; igneous open-air quarries in Great Langdale, Cumbria, and from flint mines in southern England at ~4000–3700 cal BC. In light of the recent evidence that farming was introduced at this time by large-scale immigration from northwest Europe, and that expansion within Britain was extremely rapid, we argue that this synchronicity supports this speed of colonization and reflects a knowledge of complex extraction processes and associated exchange networks already possessed by the immigrant groups; long-range connections developed as colonization rapidly expanded. Although we can model the start of these new extraction activities, it remains difficult to estimate how long significant production activity lasted at these key sites given the nature of the record from which samples could be obtained.
      PubDate: 2019-08-07
      DOI: 10.1017/RDC.2019.85
       
  • Marine Bivalve Feeding Strategies and Radiocarbon Ages in Northeast
           Atlantic Coastal Waters
    • Authors: Lo Giudice Cappelli; Elena, Austin, William E N
      Pages: 107 - 125
      Abstract: Marine mollusk shells have been extensively used to provide radiocarbon (14C)-based chronologies in paleoenvironmental and archaeological studies, however uncertainties in age measurements are introduced because secondary factors such as vital effects and diet may influence 14C incorporation into these shells. Deep burrowing and deposit feeding mollusks, in particular, may incorporate “old” carbon resulting in apparently older ages than their contemporary environment. In this study, we present paired 14C and stable isotope (δ13C and δ18O) measurements for nine species of known-age bivalves having different feeding strategies and collected in six localities around the NE Atlantic. We exclude potential “old” carbon contamination in these known-age mollusk shells, acquire a better understanding of local ecology and provide an improved context for the environmental interpretation of 14C ages. Our results indicate that, in the NE Atlantic, marine mollusk-derived 14C ages provide a reliable basis for environmental and archaeological investigation, independently of vital effects and differences in microhabitats, feeding strategies and sample location—all of which are apparent from stable isotopes.
      PubDate: 2019-07-01
      DOI: 10.1017/RDC.2019.68
       
  • New Evidence for a Mid- to Late-Holocene Change in the Marine Reservoir
           Effect Across the South Pacific Gyre
    • Authors: Petchey; Fiona
      Pages: 127 - 139
      Abstract: Holocene climate change in the South Pacific is of major interest to archaeologists and Quaternary researchers. Regional surface ocean radiocarbon (14C) values are an established proxy for studying changing oceanographic and climatic conditions. Unfortunately, radiocarbon variability in the marine environment over the period of specific importance to human colonization of the remote Pacific islands—the last 3500 years—has been poorly studied. In order to build robust and accurate archaeological chronologies using shell, it is important to rectify this. In this paper, radiocarbon marine reservoir offsets (ΔR) are presented from eight archaeological sites, ranging in age from 350 cal BP to 3000 cal BP, and compared to coral datasets from the east Australian coastline. The results indicate that a significant decrease in the South Pacific Gyre ΔR occurred between 2600 and 2250 cal BP, most likely caused by changes in ocean circulation and climate. Accurately recording the timing of variability in reservoir offset is critical to untangling changes in society that took place in the Pacific, in particular, the development of Ancestral Polynesian Society.
      PubDate: 2019-09-20
      DOI: 10.1017/RDC.2019.103
       
  • Human Activity Recorded in Carbon Isotopic Composition of Atmospheric CO2
           in Gliwice Urban Area and Surroundings (Southern Poland) in the Years
           2011–2013
    • Authors: Piotrowska; Natalia, Pazdur, Anna, Pawełczyk, Sławomira, Rakowski, Andrzej Z, Sensuła, Barbara, Tudyka, Konrad
      Pages: 141 - 156
      Abstract: In this paper, a record of the 14C and 13C isotope content of atmospheric CO2 for Gliwice is presented for samples collected on a weekly basis in the years 2011–2013. In addition, measurements were performed on the early and late wood from the annual rings of pine trees from five sites located 3–6 km from the atmospheric CO2 sampling point. The concentration of 14C in CO2 samples from the air was much lower relative to the concentration of this isotope in “clean air,” indicating a pronounce Suess effect, with a mean Δ14C lower by ca. 60‰ than Jungfraujoch data when the 15% of the highest differences are excluded, which leads to the FFCO2 estimate of 5.8%. In winter, the main source of fossil CO2 was fuel combustion, as confirmed by significant correlations with air pollutants. In the vegetation seasons, the Δ14C was highly variable due to biogenic influence and more variable winds. The isotopic results were also affected by an additional significant CO2 source for the Gliwice air, which was a closed mine shaft. The Δ14C and δ13C in tree rings did not record a strong Suess effect in the years 2008–2013 in woodland areas around Gliwice city.
      PubDate: 2019-08-19
      DOI: 10.1017/RDC.2019.92
       
  • The Rise and Fall of a Parallel-Walled Structure: Assessing the Site
           Sequence at Pachamta
    • Authors: Raczek; Teresa P, Shirvalkar, Prabodh, Prasad, Esha, Pandey, Lalit
      Pages: 157 - 168
      Abstract: In this article, we investigate the chronology of a large parallel-walled mudbrick structure at the site of Pachamta in Rajasthan, India. Pachamta is larger than the contemporaneous Harappan site of Kalibangan and part of a society collectively known as the Ahar Culture. Recent excavations at Pachamta provided an opportunity to elaborate on the available dates for this society and to investigate the chronology of an enigmatic parallel-walled structure. The chronology and function of such prominent structures remains murky, although scholars have suggested that these buildings served as public storage because they resemble the granary at Harappa. Through excavation, our team collected data for assessing the Pachamta parallel-walled structure including construction methods, process of abandonment, and associated dates. The thirteen 14C assays from the site and an associated phase and sequence model performed in OxCal 4.3 demonstrate that the building was constructed, used, and abandoned in a relatively brief period. If parallel-walled structures are storage buildings, then expansion of the building may indicate prosperity or surplus, while abandonment may indicate an end to abundance or a shift in resource management. Carefully dating the structure allows us to investigate the timing of social processes including political and economic shifts within the settlement.
      PubDate: 2019-08-13
      DOI: 10.1017/RDC.2019.91
       
  • Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic
           Event in Eastern Alaska and Western Yukon
    • Authors: Reuther; Joshua, Potter, Ben, Coffman, Sam, Smith, Holly, Bigelow, Nancy
      Pages: 169 - 188
      Abstract: The northern lobe of the White River Ash (WRAn) is part of a bilobate distribution of tephras that originated from the Wrangell Volcanic Field near the border of Alaska, USA, and Yukon, Canada. It is distributed across northeastern Alaska and the northwestern portion of the Yukon. The timing of this eruption has seen little critical analysis relative to the younger and more extensive eastern lobe eruption of the White River Ash. We compiled 38 radiocarbon (14C) dates from above and below the WRAn, and employed several statistical approaches to identify and eliminate or down-weight outliers, combine dates, and different Bayesian models, to provide a revised age estimate for the timing of the WRAn tephra deposition. Our results indicate that the most accurate modeled age estimate for the northern lobe of the White River Ash deposition is between 1689 and 1560 cal BP, with a mean and median of 1625 and 1623 cal BP, respectively. This age range is 90 to 200 years younger than previous age estimates.
      PubDate: 2019-09-11
      DOI: 10.1017/RDC.2019.110
       
  • Radiocarbon Map of a Bomb-Peak Labeled Human Eye
    • Authors: Rinyu; Laszlo, Janovics, Robert, Molnar, Mihaly, Kisvarday, Zoltan, Kemeny-Beke, Adam
      Pages: 189 - 196
      Abstract: The 14C/12C ratio of living organisms is largely determined by the 14C/12C ratio of consumed diet as well as by the atmospheric 14C concentration together with the body’s metabolic processes. The measured 14C content of living matter compared to the atmospheric radiocarbon level can provide invaluable information about developmental processes. Our aim was to determine the 14C content of ten different tissues of the human eye using the 14C bomb-pulse dating signature. The 14C content of the atmosphere, so called 14C “bomb-pulse” has labeled humanity offering an opportunity to determine these special formation, turnover and substitution courses in biology. The results allowed us to construct a 14C map of the bomb-peak labeled human eye. According to the anatomical location of the tissues, an unexpected picture emerged as in moving from the outer parts towards the inner parts of the eye, the 14C content of each tissue decreased. The data presented here are compatible with the view that the oldest parts of the eye are the sclera, the limbus and the cornea, in this order, and moving further inside, the youngest tissue of the eye is the retina.
      PubDate: 2019-07-25
      DOI: 10.1017/RDC.2019.78
       
  • Origin and Alteration of Organic Matter in Hydrate-Bearing Sediments of
           the Rio Grande Cone, Brazil: Evidence from Biological, Physical, and
           Chemical Factors
    • Authors: Rodrigues; Luiz F, Macario, Kita D, Anjos, Roberto M, Ketzer, João M M, Maraschin, Anderson J, Augustin, Adolpho H, Moreira, Vinicius N, dos Santos, Victor H J M, Muniz, Marcelo C, Cardoso, Renan P, Viana, Adriano R, Miller, Dennis J
      Pages: 197 - 206
      Abstract: The Rio Grande Cone is a major fanlike depositional feature in the continental slope of the Pelotas Basin, Southern Brazil. Two representative sediment cores collected in the Cone area were retrieved using a piston core device. In this work, the organic matter (OM) in the sediments was characterized for a continental vs. marine origin using chemical proxies to help constrain the origin of gas in hydrates. The main contribution of OM was from marine organic carbon based on the stable carbon isotope (δ13C-org) and total organic carbon/total nitrogen ratio (TOC:TN) analyses. In addition, the 14C data showed important information about the origin of the OM and we suggest some factors that could modify the original organic matter and therefore mask the “real” 14C ages: (1) biological activity that could modify the carbon isotopic composition of bulk terrestrial organic matter values, (2) the existence of younger sediments from mass wasting deposits unconformably overlying older sediments, and (3) the deep-sediment-sourced methane contribution due to the input of “old” (>50 ka) organic compounds from migrating fluids.
      PubDate: 2019-09-02
      DOI: 10.1017/RDC.2019.109
       
  • 14C Blank Assessment in Small-Scale Compound-Specific Radiocarbon Analysis
           of Lipid Biomarkers and Lignin Phenols
    • Authors: Sun; Shuwen, Meyer, Vera D, Dolman, Andrew M, Winterfeld, Maria, Hefter, Jens, Dummann, Wolf, McIntyre, Cameron, Montluçon, Daniel B, Haghipour, Negar, Wacker, Lukas, Gentz, Torben, van der Voort, Tessa S, Eglinton, Timothy I, Mollenhauer, Gesine
      Pages: 207 - 218
      Abstract: Compound-specific radiocarbon (14C) dating often requires working with small samples of < 100 µg carbon (µgC). This makes the radiocarbon dates of biomarker compounds very sensitive to biases caused by extraneous carbon of unknown composition, a procedural blank, which is introduced to the samples during the steps necessary to prepare a sample for radiocarbon analysis by accelerator mass spectrometry (i.e., isolating single compounds from a heterogeneous mixture, combustion, gas purification and graphitization). Reporting accurate radiocarbon dates thus requires a correction for the procedural blank. We present our approach to assess the fraction modern carbon (F14C) and the mass of the procedural blanks introduced during the preparation procedures of lipid biomarkers (i.e. n-alkanoic acids) and lignin phenols. We isolated differently sized aliquots (6–151 µgC) of n-alkanoic acids and lignin phenols obtained from standard materials with known F14C values. Each compound class was extracted from two standard materials (one fossil, one modern) and purified using the same procedures as for natural samples of unknown F14C. There is an inverse linear relationship between the measured F14C values of the processed aliquots and their mass, which suggests constant contamination during processing of individual samples. We use Bayesian methods to fit linear regression lines between F14C and 1/mass for the fossil and modern standards. The intersection points of these lines are used to infer F14Cblank and mblank and their associated uncertainties. We estimate 4.88 ± 0.69 μgC of procedural blank with F14C of 0.714 ± 0.077 for n-alkanoic acids, and 0.90 ± 0.23 μgC of procedural blank with F14C of 0.813 ± 0.155 for lignin phenols. These F14Cblank and mblank can be used to correct AMS results of lipid and lignin samples by isotopic mass balance. This method may serve as a standardized procedure for blank assessment in small-scale radiocarbon analysis.
      PubDate: 2019-09-23
      DOI: 10.1017/RDC.2019.108
       
  • Verification of Radiocarbon Transport Predicted by Numerical Modeling in
           the Porous Formation of NE Hungary Considering Paleo-Hydrogeology
    • Authors: Székely; Ferenc, Deák, József, Szűcs, Péter, Kompár, László, Zákányi, Balázs, Molnár, Mihály
      Pages: 219 - 233
      Abstract: Verification of a groundwater flow model by radiocarbon (14C) data are presented taking into consideration the paleo-hydrogeological changes. Northeastern area of the Great Hungarian Plain was a deep-lying flat area, and its central part (Nyírség) has been uplifted in the last 15,000 years. These geological events have drastically changed the hydrogeological conditions of Nyírség. The groundwater flow system is composed of the Quaternary-Pliocene-Upper Pannonian clastic sediments. Groundwater flow modeling has been performed to define the main lateral and vertical flow directions and velocities controlling the propagation of the environmental radioactive tracer 14C. Solute-transport modeling was used to calculate the 14C activity. The recent steady-state groundwater flow velocity was reduced to a reasonable value characterizing the average flow velocity over the 15 ka simulation period using “trial and error” method. The best fit between the simulated and measured 14C data was achieved by assuming 0.4 flow velocity reduction factor. Results indicate that the present steady-state flow model with this flow velocity reduction factor is capable of reproducing the observed 14C data taking into account the effect of the significant uplift of the part of the land surface in the last 15 ka in NE Hungary.
      PubDate: 2019-07-24
      DOI: 10.1017/RDC.2019.84
       
  • Spatial Distribution of 14C in Tree Leaves from Bali, Indonesia
    • Authors: Varga; Tamás, Jull, A J Timothy, Lisztes-Szabó, Zsuzsa, Molnár, Mihály
      Pages: 235 - 242
      Abstract: The increase of fossil-fuel-derived CO2 in the atmosphere has led to the dilution of the atmospheric radiocarbon concentration, but due to the costly instrumentation, the continuous atmospheric 14C/12C data is incomplete in developing countries, such as in Indonesia. These data give useful information about the level of local and regional fossil emissions. In this study, 14C AMS measurements of local vegetation and woody plant species samples have been used to estimate the rate of fossil-fuel-derived carbon in the plants, which fix the CO2 from the atmosphere by photosynthesis. Evergreen leaf samples were collected in September 2018 on the island of Bali in different, diverse districts in local and urban areas. The samples from the densely populated areas show observable fossil fuel emissions and show that the Δ14C level is close to zero ‰, similar to the natural level.
      PubDate: 2019-10-11
      DOI: 10.1017/RDC.2019.113
       
  • New Radiocarbon Dates for the Late Gravettian in Eastern Central Europe
    • Authors: Wilczyński; Jarosław, Goslar, Tomasz, Wojtal, Piotr, Oliva, Martin, Göhlich, Ursula B, Antl-Weiser, Walpurga, Šída, Petr, Verpoorte, Alexander, Lengyel, György
      Pages: 243 - 259
      Abstract: The Middle Upper Palaeolithic (MUP) in eastern Central Europe (ECE) comprises three variants of Gravettian culture: Early Gravettian, Pavlovian, and Late Gravettian. While Early Gravettian and Pavlovian are merely located in Lower Austria and Moravia, the Late Gravettian occupations occurred over the entire territory of ECE. Compared to the number of sites the radiocarbon dating and the absolute chronology of the Late Gravettian is rather poor. The results presented here bring a new set of radiocarbon (14C) dates for the Late Gravettian period in ECE and propose that this period began and ended earlier than previously suggested.
      PubDate: 2019-10-24
      DOI: 10.1017/RDC.2019.111
       
  • Radiocarbon Dating at Groningen: New and Updated Chemical Pretreatment
           Procedures – CORRIGENDUM
    • Authors: Dee; M W, Palstra, S W L, Aerts-Bijma, A Th, Bleeker, M O, de Bruijn, S, Ghebru, F, Jansen, H G, Kuitems, M, Paul, D, Richie, R R, Spriensma, J J, Scifo, A, van Zonneveld, D, Verstappen-Dumoulin, B M A A, Wietzes-Land, P, Meijer, H A J
      Pages: 261 - 261
      PubDate: 2019-11-19
      DOI: 10.1017/RDC.2019.140
       
  • Verification of Radiocarbon Transport Predicted by Numerical Modeling in
           the Porous Formation of NE Hungary Considering Paleo-Hydrogeology –
           CORRIGENDUM
    • Authors: Székely; Ferenc, Deák, József, Szűcs, Péter, Kompár, László, Zákányi, Balázs, Molnár, Mihály
      Pages: 263 - 263
      PubDate: 2019-10-21
      DOI: 10.1017/RDC.2019.128
       
 
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